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neonofarm [45]
2 years ago
9

N - 8 = -10 Pls find the value of N

Mathematics
1 answer:
xz_007 [3.2K]2 years ago
6 0

Answer:

-2

Step-by-step explanation:

-2 minus 8 equals -10  :)

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s = 41 cm

Step-by-step explanation:

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Plugging in 164 gives us 164 = 4s, where solving for s gives us s = 41

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Step-by-step explanation:

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3 years ago
Sin5A/SinA-cos5A/cosA=4cos2A​
irina1246 [14]

Answer:

See Explanation

Step-by-step explanation:

\frac{ \sin5A}{\sin A}  -  \frac{ \cos5A}{\cos A}  = 4\cos2A \\  \\ LHS = \frac{ \sin5A}{\sin A}  -  \frac{ \cos5A}{\cos A}   \\  \\  =  \frac{ \sin5A \:\cos A -  \cos5A \:  \sin A}{\sin A \:\cos A }  \\  \\  =  \frac{ \sin(5A -A )}{\sin A \:\cos A}  \\  \\ =  \frac{ \sin 4A}{\sin A \:\cos A}  \\  \\ =  \frac{ 2\sin 2A \: \cos 2A}{\sin A \:\cos A}  \\  \\ =  \frac{ 2 \times 2\sin A \: \cos A \: \cos 2A}{\sin A \:\cos A}  \\  \\ =  \frac{ 4\sin A \: \cos A \: \cos 2A}{\sin A \:\cos A}  \\  \\ =4\cos 2A \\  \\  = RHS \\  \\ thus \\  \\  \frac{ \sin5A}{\sin A}  -  \frac{ \cos5A}{\cos A}  = 4\cos2A \\  \\ hence \: proved

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3 years ago
Is x^-2 -1 a polynomial
Bond [772]

Answer:

Yes, it is a polynomial.

Step-by-step explanation:

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2 years ago
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